Chapter 12.
Add a channel information service
Typing multicast addresses is not very fun... that's why you need
a channel information service ! VideoLAN has implemented a channel
information service based on the SAP/SDP standard. The SAP announces
about the multicast programs are sent on the network (via the multicast
address 224.2.127.254 reserved for this purpose).
On the client side, VLCs receive these annouces and automatically add
the programs announced to their playlist.
VLC can send the SAP announces associated with the programs
it is streaming. VLS can't do that, but an independant program, the
mini-SAP-server, can send the announces for the programs sent by
VLS.